On 05.10.2021 09:43, Juergen Gross wrote: > On 30.09.21 14:40, Jan Beulich via Virtualization wrote: >> While using a plain (constant) address works, its use needlessly invokes >> a SIB addressing mode, making every call site one byte larger than >> necessary. Instead of using an "i" constraint with address-of operator >> and a 'c' operand modifier, simply use an ordinary "m" constraint, which >> the 64-bit compiler will translate to %rip-relative addressing. This way >> we also tell the compiler the truth about operand usage - the memory >> location gets actually read, after all. >> >> 32-bit code generation is unaffected by the change. >> >> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> > > Reviewed-by: Juergen Gross <jgross@xxxxxxxx> Thanks. I notice this wasn't part of your 5.16-rc1 pull request, nor did it make it into Linus'es tree via any other route. May I ask what the plans here are? Jan _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
